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@article{DE_1985_21_11_a22, author = {S. Yu. Nazarov}, title = {A boundary value problem for a degenerate hyperbolic equation}, journal = {Differencialʹnye uravneni\^a}, pages = {2003--2005}, publisher = {mathdoc}, volume = {21}, number = {11}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1985_21_11_a22/} }
S. Yu. Nazarov. A boundary value problem for a degenerate hyperbolic equation. Differencialʹnye uravneniâ, Tome 21 (1985) no. 11, pp. 2003-2005. http://geodesic.mathdoc.fr/item/DE_1985_21_11_a22/